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General Reference

Architecture

This article describes the components and instance deployment structure of Ping An Cloud ELB.

Components

ELB service includes the following three parts:

• ELB Instances

ELB instances in running status can provide ELB services. An ELB instance provides the s service IP address as a unified interface for clients to access. You can configure each ELB instance with multiple listeners to provide multi-port listening services for the same service IP address. You can configure each listener with a specific server resource pool, or specify multiple listeners to the same server resource pool. Create an ELB instance first and add a minimum of one listener and one back-end service resource if you need to use ELB service.

• Listener

Listener is used to receive the clients requests and forward them to the host in the server resource pool, and perform a health check on the back-end host.

• Server resource pool

Server resource pool consists of a set of ECS instances or BMS instances to receive front-end requests. You can add one or more ECS instances or BMS instances to the server resource pool and configure weights and back-end service ports.

External ELB instance deployment structure

Internal ELB instance deployment structure

Classic ELB instance deployment structure

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